Boiler construction



y 3, 1952 J. K. DUKAS 2,602,431

BOILER CONSTRUCTION 2 SHEETSSHEET 1 Filed March 5, 1947 Jmes K fll/KAS July 8, 1952 J. K. DUKAS BOILER CONSTRUCTION Filed March 5, 1947 2 SHEETS-SHEET 2 INVENTOR. JwEs A. 170/015 Patented July 8, i952 PATENT BOILER CONSTRUCTION James Dukas, Edwardsville, Pa. "Application March s,194"1,seria1- o;7 si,94s

t J 1 Claim.

I This invention relatesto. furnaces, boilers, and the like, and hasforone of its objects the productionofia simple and efficient means for facilitating the fastening of thesections of boilers, furnaces and the like, 'together.-

Another object of this invention is the. productionof-a simple'and efiicient means for facilitating access to the securing means which fastens the sections of the furnace or boiler together. Other objects and-advantages of the invention will appear throughout the following specification and claim. Inthe drawings:

Figure 1 is a front elevational view of the fur.-. nace, boiler, 'orihe like;

Figure 2 is a side elevational view illustrating the manner in which a plurality of furnace or boiler sections are assembled;

11mm 3 is an enlarged fragmentary side elevation'al'view 'of a frontfand .rear section assembledcertain parts being shown in'section; Figure Lisa fragmentary transverse sectional view through the top'portionof one of. thefurnace or'boiler sections} Figure?) isa sid i lus ratin a. front and r ar. sect e u ed seth rs lu r n the o at cn o he ee e pipesfor the water jacket;

' Figur-efi is a rearelev'ationaliview ofthe front section;

Figure 7 is a front elevational view of the rear section;

Figure 8 is a fragmentary sectional view illustrating thesecuring means for anchoring the sections of the furnace or boiler together;

Figure 9 is a modified form of the securin means illustrated in Figure 8;

Figure 10 is a vertical sectional view taken on line Ill-I'D of Figure 6.

By referring to the drawings, it will be seen that IE] designates the furnace or boiler, which may be formed of a front section II, a rear section l2, and an intermediate section l3, as shown in Figure 2, if desired. Other intermediate sections may be employed to increase the capacity of the furnace or boiler, as occasion may demand. For the purpose of describing the invention, the description will be directed to a furnace or boiler having a front and a'rear section, although it should be understood that any number of sections may be used without departing from the spirit of the invention.

Fuel-feeding hoppers l4 preferably are supported above the furnace or boiler 10, as shown in Figures 1 and 2, and feed pipes l5 convey fuel fragmentary elevational view 2; from the hoppers 14,.to the fire-box of the. fi l}: naceor boiler. Suitable. operating levers Iii op erate the. valve l! for controlling the delivery offuel from the hoppers M to the fire-box.

Each section of the furnace or boiler H1 is pro: videdwitha water. jacket I8 or compartment withinwhich water and steam is contained dill: ing the operation of thefurnacc or boiler. The sections of the boiler may be of the conventional design having a depending hollow central partition I9. A suitable sealing gasket 20. of the conventional type is interposedbetween-the sec: tions .ofithe furnace or boiler ID. The sections l l and 12 are provided with abutting walls 2 [and 22 respectively, between whichthe sealinggasket 20 fits. Securing. elements v23 pass throughthe abutting walls 2! and 22 and the. asket 20,.at selective intervals, and threaded rings 24. are threaded upon opposite ends of the securing ele: ments '23. and engagethe inner faces of the re.- spective abutment. walls 2| and 22 to firmly anchor the abutment wallstogether in sealed relation, as'shown in detail in Figure 8. The

. outerside walls 25 and 26 of the sections of the gaskets to provide a waterrtight seal.

25 furnaceor boiler are provided with access ports 21 which are normally covered by cover. plates 28.. and. are provided with suitable sealin Suitable securing elements, screws, bolts or the like, anchor the plates 28 .in. position. The ports 21 are formed. at selected locations where accessmay be had tothe interior of the water jackets of the various sections to fasten the securing elements 23 and the bushings 29 and 30 which provide communicating ports between the sections at the top of the water jackets. The bushing 29 provides a communicating steam port and the bushing 30 provides a communicating water port. The bushings 29 and 30 may be secured in a manner illustrated in Figures 8 or 9 and may be of the same construction except as to size, and are hollow to permit a free flow of water or steam between the water jackets of the abutting sections of the furnace or boiler.

I preferably provide enlarged access ports or openings 3| in the outerside walls of the sections which extend vertically and over a sufficient area so that access may be had to all parts for installation of the circulating or communication pipes 32, and for fastening the securing elements 23 and rings 24 thereof. A cover plate 33 closes each opening 3| and carries a sealing gasket 34. Suitable securing elements 35 anchor the plates 33 in a closing position. The pipes 32 are preferably threaded, as at 36, into the side walls of the partition l9 and are secured to the inner side walls 31 of the outer water jacket by the conventional sweating process. As stated above. access may be had to these pipes 32 through the openings 3| when the plates 33 are removed.

As shown in Figure 9, a securing element 38 may replace the securing element or elements 23. This securing element 38 is threaded into one abutment wall 22? and carries a threaded ring 39 which is threaded upon the opposite end of the element 38 to overlap the inner face of the adjacent wall to clamp the walls 22 and 2 I together and clamp the gasket 20 therebetween.

The rear section I2 is provided with fiues 49 having the bottom edges thereof terminating at an elevation above the bottom end of the partition I9 thereof to cause the heating fumes to pass upwardly through the section II between the pipes 32 through the flues 40 and downwardly between the pipes 32 of the rear section 12 and out through the stack-communicating opening 41 formed in the rear wall at the bottom of the section 12. Baille plates 42 are placed in the section H, as shown in Figure 3 to provide a circuitous circulation of the heating fumes in their upward path of movement. Similar baflle plates may be provided in all sections when desired without departing from the spirit of the invention.

It will be noted that I provide a large cover plate 33 and a large aperture 3! to permit access to the securing elements 23 and access to the pipes 32 in the section. I 1, whereas in'section I2 I provide a plurality ofports and a plurality of cover plates 43 for this purpose. The size and number of ports and plates may be varied to suit the type and size of section employed.

From the foregoing description, it should be noted that an eflicient heating unit has been produced to obtain a maximum. efficiency from a heating standpoint, as well as in the efiiciency of assembling the sections of the furnace or boiler for proper operation. The passage of the heating fumes over a maximum heating surface andin a circuitous passage will produce a maximum heating capacity. The assembly of sections of a boiler or furnace of the general type to which this invention relates has been a difficult task but the arrangement of the ports and securing elements herein described and illustrated in the drawing will greatly facilitate the assembly of said sections. a

As shown in Figure 5, water feeder pipes 42 communicate with the water jacket of the section II in the conventional manner. It should be noted that the heating unit in the nature of a furnace or boiler I8 is provided with two clean-out doors 45 and a lock-in fire door 46 in the furnace front.

Having described the invention, what is claimed as new is: v

A heating unit of the class described comprising a plurality of sections, each section having a water jacket, the adjacent sections having flat abutment walls provided with inner faces, a flat sealing gasket fitting between the abutment walls of the sections, said abutment walls having registering apertures, hollow securing elements passing through said registering apertures of the abutment walls and through the gasket to provide communication between the sections of the unit, said securing elements having externally threaded opposite ends, means engaging the opposite threaded endsof the securing elements for securely fastening and sealing the flat abutment walls of said sections against said gasket to provide a water-tight seal therebetween, said sections having side walls, and said side walls having normally closed access means adjacent the securing elements to facilitate access to the securing elements.

JAMES K. DUKAS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 65,630 Bagnall June 11', 1867 146,476 Roeper Jan. 13,1874 568,198 Hoffman Sept. 22, 1896 661,532 Hohenstein "Nov. 13, 1900 681,226 Johnson Aug. 27, 1901 724,373 Armitage et a1; Mar. 31, 1903 821,269 Watson 1 May 22, 1906 1,242,856 Phelps Oct. 9, 1917 1,793,323 King Feb. 17, 1931 1,839,516 'Wetherbee 1 Jan. 5, 1932 1,868,445 Brabbee July'19,'1932 2,022,716 Grine et al. Dec. 3,1935 2,074,900 Gerhardt Mar. 23, 1937 

